Phase packages are now verified before installation
The Phase 1 Installer now validates server compatibility and SHA-256 file checksums before any managed file is written. A damaged, incomplete, or altered version package is rejected before the current installation is changed.
What changed
Added PHP version and extension compatibility checks.
Added SHA-256 checksums for every managed file in each phase package.
Added manifest identity validation after secure extraction.
Added an Installed Files verification tool.
Reports missing or modified managed files and identifies the correct repair package.
Keeps rollback snapshots and protected runtime data unchanged.
Why this matters
Version upgrades, downgrades, and reinstalls are now deterministic. Staff can verify the current installation, preview the target changes, and apply only a package that passes compatibility and integrity checks.
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